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| author | Denys Vlasenko | 2018-04-16 21:48:32 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2018-04-16 21:48:32 +0200 |
| commit | 816d8d7a668b541cee99469edb90e4917ea11c3e (patch) | |
| tree | 84d10ca9173bf499a23de61e577a94639fdaeec2 /console-tools | |
| parent | fa87abe807530daeb46f6730d4231489a4e2782b (diff) | |
| download | busybox-816d8d7a668b541cee99469edb90e4917ea11c3e.zip busybox-816d8d7a668b541cee99469edb90e4917ea11c3e.tar.gz | |
setlogcons: open /dev/ttyN for "setlogcons N", not /dev/tty1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'console-tools')
| -rw-r--r-- | console-tools/setlogcons.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/console-tools/setlogcons.c b/console-tools/setlogcons.c index 6778a4d..0fad660 100644 --- a/console-tools/setlogcons.c +++ b/console-tools/setlogcons.c @@ -41,6 +41,7 @@ int setlogcons_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int setlogcons_main(int argc UNUSED_PARAM, char **argv) { + char *devname; struct { char fn; char subarg; @@ -52,7 +53,14 @@ int setlogcons_main(int argc UNUSED_PARAM, char **argv) if (argv[1]) arg.subarg = xatou_range(argv[1], 0, 63); - xioctl(xopen(VC_1, O_RDONLY), TIOCLINUX, &arg); + /* Can just call it on "/dev/tty1" always, but... + * in my testing, inactive (never opened) VTs are not + * redirected to, despite ioctl not failing. + * + * By using "/dev/ttyN", ensure it is activated. + */ + devname = xasprintf("/dev/tty%u", arg.subarg); + xioctl(xopen(devname, O_RDONLY), TIOCLINUX, &arg); return EXIT_SUCCESS; } |